SinglePropertyMap


1   package com.thaiopensource.util;
2   
3   public class SinglePropertyMap implements PropertyMap {
4     private final PropertyId pid;
5     private final Object   value;
6   
7     public SinglePropertyMap(PropertyId pid, Object   value) {
8       if (!(pid.getValueClass().isInstance(value))) {
9         if (value == null)
10          throw new NullPointerException  ();
11        throw new ClassCastException  ();
12      }
13      this.pid = pid;
14      this.value = value;
15    }
16  
17    public Object   get(PropertyId pid) {
18      if (pid != this.pid)
19        return null;
20      return value;
21    }
22  
23    public boolean contains(PropertyId pid) {
24      return pid == this.pid;
25    }
26  
27    public int size() {
28      return 1;
29    }
30  
31    public PropertyId getKey(int i) {
32      if (i != 0)
33        throw new IndexOutOfBoundsException  ();
34      return pid;
35    }
36  }
37

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